1 | //===-- Unittests for islower----------------------------------------------===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | |
9 | #include "src/ctype/islower.h" |
10 | #include "test/UnitTest/Test.h" |
11 | |
12 | TEST(LlvmLibcIsLower, DefaultLocale) { |
13 | // Loops through all characters, verifying that lowercase letters |
14 | // return a non-zero integer and everything else returns zero. |
15 | for (int ch = -255; ch < 255; ++ch) { |
16 | if ('a' <= ch && ch <= 'z') |
17 | EXPECT_NE(LIBC_NAMESPACE::islower(ch), 0); |
18 | else |
19 | EXPECT_EQ(LIBC_NAMESPACE::islower(ch), 0); |
20 | } |
21 | } |
22 | |